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input file for new instrument
input file for Bruker D2 benchtop diffractometer data
matsmcfly #1
Member since Apr 2018 · 10 posts
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Subject: input file for new instrument
I have some data collected on a instrument (D2 Phaser) with non-monochromated source, what is the correct syntax to use when writing the input file to account for Ka1, Ka2 and Kbeta wavelengths?

Also, I might be mistaken, but I am under the impression that the way these instruments workis that the goniometer radius changes over 2Theta i.e. the sample moves vertically during the scan to allow more 2Theta coverage in a more compact unit.  If any other people with experience of the D2 benchtop diffractometer could advise me on this, it would be greatly appreciated.

Thanks
rowlesmr #2
Member since Oct 2011 · 245 posts
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I think that the detector/source pivot on a point, and the sample moves down such that the radius stays constant.

IIRC from the last conference I went to...

Matthew
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Matthew
matsmcfly #3
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Quote by rowlesmr on 2020-07-31, 10:02:
I think that the detector/source pivot on a point, and the sample moves down such that the radius stays constant.

Matthew

Thats great, thank you.
johnsoevans (Administrator) #4
User title: John Evans
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For the kbeta part of your question see: http://topas.dur.ac.uk/unb/forum.php?req=thread&id=229

You can just add a kbeta line to the emission profile.  However this can cause problems due to beta peaks being far from alpha peaks.  If this is an issue then you can define a second str with it's own emission profile.
rowlesmr #5
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That adding a str with it's own emission profile is a neat trick, and something i didn't realise you could do until recently.

I'm bookmarking that.
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Matthew
matsmcfly #6
Member since Apr 2018 · 10 posts
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Many thanks to you both for your replies - problem now solved  :-) , thankyou
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